Artificial building-block.



I. R. HUDSON.

ARTIFICIAL BUILDING BLOCK.

APPLIOATION FILED APR.23, 1907. RENEWED D30. a0, 1908.

Patented May 11, 1909.

W M m 9M wk FRANK R; HUDSON, OF SAN MATEO, CALIFORNIA. A

ARTIFICIAL BUILDING-BLOCK.

Specification of Letters Patent.

, Patented May 11, 1909.

Application filed April 23, 1907, Serial No. 369,850. Renewed December 80, 1908. Serial No. 469,992.

To all whom it may concern:

Be it known that I, FRANK R. HUDSON, a sub'ect of the King of Great Britain, residin at an Mateo, in the county of San Mateo and State of California, have invented certain new and useful Improvements in Artificial Building-Blocks, specification.

The hereinafter described invention relates to an improved artificial building block to be used as a substitute for reinforced concrete in the construction of building walls, the object of the invention being the production of a block which will interlock with adjacent vertically dis osed blocks, and be held to adacent side b ocks by a bond joint, the block being reinforced or strengthened by tie rods extended either vertically or longltudinally through bores formed in the block. This object is attained by forming the block with a longitudinally disposed tongue on its upper e ge, and a groove or channel in its lower edge, which groove or channel will receive the tongue of an adjacent vertically disposed block, the side edges of the block having therein a vertically disposed groove or channel provided with seats or depressions, which side grooves or channels re ister with the side grooves or channels 0 adjacent side blocks to form a filling opening for the rece t1on of li uid cement to bond the bloc s laterally, t e cement flowing into the filling openings thus formed entering the seats or depressions and forming when the cement has set interlocking ke s, and providing the block with a series 0 vertically extended and a series of longitudinally extended bores throu h which tie rods are to be passed or exten ed to reinforce the blocks and hold the same in position.

To com rehend the invention reference should be ad to the accompanying sheet of drawings, wherein- Y Figure 1 is a pers ective view of the improved block; and l ig. 2 is a broken detail view of a series of blocks united.

In the drawings the numeral 1 is used to designate the block, composed of concrete or other suitable material, which block is provided on itsupdper edge with a pro'ectin'g longitudinally lspose tongue 2 n. the bottom edge of the block is formed a longitudinally extended groove 3, the urpose of which groove in the bottom e ge of the of which the following is a block and the ton ue on the upper edge of the block is that w en the blocks are placed in the wall construction, the tongue of one block will interlock with the groove of an adjacent vertically disposed block.

In each side edge of the block is formed a vertically disposed groove 4, in which grooves a series of rectangular shaped depressions or seats 5 are provided. These grooves register with corresponding grooves of adjacent side blocks when positioned in the wall and form a filling space for the reception of liquid cement poured therein to form a bond for the blocks. The cement thus oured into the filling space enters and fills t e seats or depressions 5 and forms, when the cement has set, a series of inwardly extended ton ues, to ive a stronger union between the b ocks. he longitudmally disposed tongue 2 of the block is i'ovided with rectangular shaped seats or epresslons 10 and similar seats or depressions 11 are provided in the the block. T ese seats 10 and 11 are a a ted to receive cement to assist in bonding t e blocks. Each block is formed with a series of vertically disposed bores 6 arranged alternately with res ect to the seats or depressions 10 and 11, an a series of longitudinally disposed bores 7 arranged alternately with respect to the seats or depresslons 5, which bores are for the rece tion of a series of tie rods 8 during the We construction. These rods serve to reinforce the wall as constructed, and to tie the blocks together and to hold the same in position within the wall.

The expense of constructin a reinforced wall b the use of the describe blocks is considera ly less than by the employment of reinforced concrete, and the wall may be formed more ra idly.

Having thus escribed the invention what is claimed as new and desired to be protected by Letters Patent is- A block for the construction of reinforced walls, the same being formed on its up or edge with a projecting longitudinally 'sosed tongue and on its lower edge with a ongitudinally disposed groove, the side edges having a vertical groove therein, the grooves of the side and bottom edges of the lock and the projecting longitudinally disposed tongue thereof being provided Wlth spaced rectangular shaped depressions, said roove 3 of the bottom ed e of' block being provided with a series of verti- In testimony whereof I have signed my cally disposed bores therethrough and a sename to this'speeification in the presence of ries of longitudinally disposed bores theretwo subscribing witnesses.

through for the reception of tie rods, the l0n FRANK R. HUDSON. 5 gitudlnal bores being arranged alternately Witnesses:

with the rectangular shaped depressions of N. A. ACKER,

the grooves in the side edges. WM. F. BOOTH. 

